This Piraka Combiner is one of the three unnamed BIONICLE combiner sets introduced in 2006, which are built using two Piraka sets. This model can be built using the parts of 8900 Reidak and 8903 Zaktan, its instructions were split in the instructions of these two sets. They can also be found on LEGO.com as a download. This combiner model has never appeared in the storyline.